Torque control for internal combustion engines

US4355550A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gerhard Will · Steinheim, DE
• Walter Stroh · Cleebronn, DE
• Martin Zechnall · Schwieberdingen, DE

Key dates

• Filing date: Sep 28, 1979
• Grant date: Oct 26, 1982
• Expiry date: Sep 28, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In order to diminish the lurching which occurs when automatic transmissions of motor vehicles perform gear changes, the invention describes apparatus for gradual changes of the engine torque at or near the onset of the gear change as well as at or near the time of gear reengagement. The engine torque may be changed by altering the fuel metering characteristics and/or the ignition timing in a gradual and controlled manner.